JP3026024U - Temperature auxiliary cover tool for heating and cooling the constant temperature plate type stirring device for physics and chemistry experiments - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To adjust by a minimum temperature energy which does not cause a jumping phenomenon of a stirring rotor by heating a heater of a sample liquid stirring device with a constant temperature top plate, and also to keep a cooling means at a minimum cooling temperature. Provision of temperature aids and elimination of overshoot. SOLUTION: An auxiliary cover tool for adjusting heat and cooling, which is detachable, is provided on a constant temperature top plate.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a temperature auxiliary cover device which can be used for both heat and cooling as a hot plate stirrer and a cool plate stirrer of a constant temperature plate type stirring device for a solution of a sample such as a physics and chemistry experiment called a constant temperature plate stirrer. It is a thing.

[0002]

[Prior art]

 Regarding the constant temperature plate type agitator for physics and chemistry experiments, as shown in FIGS. 5 to 8, a heater for the heating unit, a container box 1 (constant details not shown) containing a constant temperature controller for the cooling element and an electromagnetic rotation driving unit. A stirrer including a temperature-adjustable constant temperature top plate 3 supported on the vessel box via legs 2 is widely used as a known stirrer tool for heating and cooling a sample liquid for physics and chemistry experiments. In the conventional stirrer, a metal stirring rotor 5 serving as a magnetic material is set on the inner bottom of the beaker 4 containing the sample solution 6 on the top plate 3 above the stirrer body, and the constant temperature top plate 3 is kept at a constant temperature with a heater. It is an experimental tool that stirs and mixes the sample liquid by heating and rotating the electromagnetic rotor in the lower body to magnetically rotate the stirring rotor 5 in the beaker 4. For the stirring action by the above stirring device, it is effective to heat the sample liquid 6 to a high temperature and stir it. However, when the temperature of the constant temperature top plate 3 becomes higher, the magnetic action exerted on the stirring rotor in the beaker becomes weaker. As the stirring action is reduced, a problem of jumping of the stirring rotor 5 occurs and the stirring effect is hindered. As for the cooling action, if the cooling by the cooling unit is too strong, frost will adhere to the top plate, which will hinder proper cooling action. Further, as shown in FIG. 7, if the temperature sensor 7 is inserted into the beaker 4 and the sample solution 6 is precisely held, there is an overshoot phenomenon which is a disadvantage that only the bottom is heated, and this solution is required. .

[0003]

[Problems to be solved by the present invention]

 The problem to be solved by the present invention is to adjust by the minimum temperature energy that heating by the heater of the constant temperature top plate of the constant temperature plate stirring device does not cause the jumping phenomenon of the stirring rotor in the beaker, and the cooling means is also the minimum. The object was to provide a temperature assisting tool for maintaining the required cooling temperature with the cooling calories. In addition, in an experiment that required precise temperature adjustment of the sample liquid such as a beaker on the top plate, it was also an issue to eliminate the overshoot, which is a drawback of adjusting the heating temperature only at the bottom of the sample liquid.

[0004]

[Means for Solving the Problems]

 As a means to solve the above problems, a heat-resistant trapezoidal cover body provided with a beaker or the like that is detachably mounted on the top plate of a constant temperature plate stirring device and a holding piece is provided. Heating of the plate with a heater causes a flexible elastic beaker or the like to be attached to the inside of the trapezoidal cover body in a tongue shape, or an L-shaped outer surface of a beaker or the like placed on a constant temperature top plate. The gist of the invention is to provide a contact piece such as a beaker to provide a temperature auxiliary cover for heating and cooling the sample liquid in the beaker.

[0005]

[Embodiment of device] 【Example】

 An embodiment of the present invention will be described below. 1 and 2 show a first embodiment, 10 is a trapezoidal cover body placed on a constant temperature ceiling plate 3, which is a heat-resistant lightweight metal plate with little heat diffusion and formed into a stable trapezoidal cover body. Reference numeral 12 is a fitting opening for a beaker or the like that is opened at the upper portion of the trapezoidal upper plate 11. Reference numeral 13 is a contact piece that is attached to the inner circumference of the fitting opening and is formed of a heat-resistant and flexible elastic synthetic resin material in a tongue shape. The beaker 4 containing the sample solution 6 is fitted into the fitting port and set on the constant temperature top plate 3. At this time, the contact piece 13 is brought into sliding contact with the outer periphery of the beaker 4 and is in close contact therewith. Since the contact piece is made of a flexible elastic material, it does not hinder the beaker's operation to move in and out. In addition, the contact piece has elasticity, and corresponds to the size of the beaker appropriately, and also exerts the adjusting and holding action of the insertion port. Reference numeral 14 is a cover-holding piece fixed to the upper part of the cover body, which holds the hold-down piece so that it does not move on the top plate when the beaker is inserted or removed. You may attach to both sides of a cover body. When the beaker is inserted in the cover body, the hollow interior 17 is sealed by the contact piece 13 and does not radiate heat even when the top plate 3 is heated. It has the function of maintaining heat retention.

FIG. 3 and FIG. 4 show a second embodiment, 15 is an L-shaped contact piece detachably attached to the outer periphery of the beaker 4 to transfer the heat of the constant temperature top plate 3 directly to the outer periphery of the container to improve thermal efficiency and heat retention. I am pleased. The contact piece may be a half-divided piece, and both of the divided pieces may be closely fitted by the fitting portion 16. The material is a metal material that has heat resistance and high thermal conductivity. Alternatively, if a good quality heat insulating material with small thermal conductivity is thinly applied to the outer layer, the heat insulating property is further enhanced.

Next, regarding the cooling effect of the trapezoidal cover tool and the L-shaped contact piece by cooling, the sample solution may be cooled to 0 ° C. or lower. In that case as well, the hollow portion 17 and the trapezoidal cover tool are used. The L-shaped contact piece 15 effectively functions as a cold insulator, and frost is attached to the constant temperature top plate during cooling to prevent excessive cooling due to low temperature drop.

[0008]

【effect】

 As described above, the cover device of the present invention effectively provides the heat energy of the heating and cooling of the hot plate stirrer and the cool plate stirrer by the constant temperature top plate of the agitator to the sample solution 4 in the beaker. The rotation that eliminates the jumping phenomenon caused by the decrease in the magnetic force has the advantage of being useful for effective holding adjustment of the stirring effect. Also, the overshoot phenomenon of the sample solution temperature due to the residual heat of the top plate is effective in suppressing it because it heats the rising side surface such as a beaker. At the same time, since it has the same function for the cooling effect by cooling, it can suppress the heat dissipation effect and can perform the work in a short time with low power consumption, which is an effective machine for labor saving and efficiency improvement of the experimental work. There is an advantage that it can be provided as a practical stirring device that fulfills its function.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a cover device of the present invention.

FIG. 2 is a central sectional view of FIG.

FIG. 3 is a plan view of another embodiment of the stirring device.

FIG. 4 is a central sectional view of FIG.

FIG. 5 is an overall view showing a conventional stirring device.

FIG. 6 is a side view of FIG. 5;

FIG. 7 is an overall view of another example of a conventional stirring device.

FIG. 8 is a side view of FIG. 7;

[Explanation of symbols]

 1 Instrument Box 2 Legs 3 Constant Temperature Plate 3'Temperature Control Knob 4 Beaker 5 Stirring Rotor 5'Rotation Control Knob of Stirring Rotor 6 Sample Liquid 7 Temperature Sensor 8 Temperature Sensor Insert 9 Power Terminal 10 Trapezoidal Cover 11 Trapezoidal Plate 12 Fitting port 13 Adhering piece 14 Holding piece 15 L-shaped adhering piece 16 Fitting part 17 Hollow part

Claims (2)

[Scope of utility model registration request] 1. A constant temperature plate type agitator for physics and chemistry experiments, which comprises a container box accommodating a thermostatic controller for heating and cooling parts and an electromagnetic rotary drive part, and a thermostat top plate supported by legs on the container box. In the apparatus, a heat-resistant trapezoidal cover body provided with a fitting inlet such as a beaker that is detachably mounted on the constant temperature top plate, and can be surrounded by a tongue shape inside the fitting inlet of the trapezoidal covering body. A temperature auxiliary cover tool for heating and cooling a constant temperature plate stirring device for physics and chemistry experiments, characterized in that it comprises a contact piece such as a flexible elastic beaker and a holding piece provided on the upper part of the cover body. 2. A constant temperature plate stirring device for physics and chemistry experiments, characterized in that a beaker or the like mounted on the constant temperature top plate according to claim 1 is provided with a contact piece such as a beaker having an L-shaped cross section on the outer periphery. Temperature auxiliary cover tool for heating and cooling.